He had an affectionate heart.

He must love somebody.
She saw no reason against their being happy.

Louisa had fine naval fervour to begin with, and they would soon grow more alike.

He would gain cheerfulness, and she would learn to be an enthusiast for Scott and Lord Byron; nay, that was probably learnt already; of course they had fallen in love over poetry.

The idea of Louisa Musgrove turned into a person of literary taste, and sentimental reflection was amusing, but she had no doubt of its being so.